Zigfu.com offers a development kit that supports Unity3D with Kinect using the Kinect for Windows SDK from Microsoft or the OpenNI/NITE software provided by PrimeSense. We have a commercial SDK and a watermarked version for free use with plenty of sample scenes and a community of developers on our google group (unitykinect.com). We also support compiling to the web player using our Zigfu Browser Plugin to transmit skeleton and camera data from the browser to Unity3D web player.